The integrated circuit used in this detector is uncommon today. We found it in a documentation from the 70s. Detection is done by an optical camera with LEDs and a photo sensor.
This circuit was found in a 1970 Philips documentation. The components are from the time, and...
This circuit uses two sensors that are placed at the intersection of a miniature railway, causing...
This application is not modern since few computers have parallel ports. But you can use this...